Mark IV (Schwinn Approved) coaster brake

Need help taking this one apart. Does anyone have a diagram and/or instructions? I got the lock ring off and was able to get the axle screwed out, but some of the pieces won't budge and I don't want to start forcing something in the wrong way. The two primary culprits (using terminology from a Bendix 70 diagram) are the retainer ring on the drive clutch (can't seem to figure out how to separate the spring so the clutch will come out) and unscrewing the assembly that consists of the sprocket, the dust cap, the bearings, and the drive screw (there may be more pieces that I don't see at this point). I would assume that the sprocket unscrews off the threads (that the lock ring went on) but it won't budge (it should be reverse thread but I have tried both ways).